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| author | Ross Zwisler <ross.zwisler@linux.intel.com> | 2017-09-07 01:18:47 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-09-07 02:27:24 +0200 |
| commit | d01ad197ac3b50a99ea668697acefe12e73c5fea (patch) | |
| tree | ac68cf61d2d230d3dd27e5a4029818ae6b4e8a71 | |
| parent | dax: use common 4k zero page for dax mmap reads (diff) | |
| download | linux-d01ad197ac3b50a99ea668697acefe12e73c5fea.tar.xz linux-d01ad197ac3b50a99ea668697acefe12e73c5fea.zip | |
dax: remove DAX code from page_cache_tree_insert()
Now that we no longer insert struct page pointers in DAX radix trees we
can remove the special casing for DAX in page_cache_tree_insert().
This also allows us to make dax_wake_mapping_entry_waiter() local to
fs/dax.c, removing it from dax.h.
Link: http://lkml.kernel.org/r/20170724170616.25810-5-ross.zwisler@linux.intel.com
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Suggested-by: Jan Kara <jack@suse.cz>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: "Darrick J. Wong" <darrick.wong@oracle.com>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | fs/dax.c | 2 | ||||
| -rw-r--r-- | include/linux/dax.h | 2 | ||||
| -rw-r--r-- | mm/filemap.c | 13 |
3 files changed, 3 insertions, 14 deletions
@@ -127,7 +127,7 @@ static int wake_exceptional_entry_func(wait_queue_entry_t *wait, unsigned int mo * correct waitqueue where tasks might be waiting for that old 'entry' and * wake them. */ -void dax_wake_mapping_entry_waiter(struct address_space *mapping, +static void dax_wake_mapping_entry_waiter(struct address_space *mapping, pgoff_t index, void *entry, bool wake_all) { struct exceptional_entry_key key; diff --git a/include/linux/dax.h b/include/linux/dax.h index b3518559f0da..319e0d997446 100644 --- a/include/linux/dax.h +++ b/include/linux/dax.h @@ -123,8 +123,6 @@ int dax_iomap_fault(struct vm_fault *vmf, enum page_entry_size pe_size, int dax_delete_mapping_entry(struct address_space *mapping, pgoff_t index); int dax_invalidate_mapping_entry_sync(struct address_space *mapping, pgoff_t index); -void dax_wake_mapping_entry_waiter(struct address_space *mapping, - pgoff_t index, void *entry, bool wake_all); #ifdef CONFIG_FS_DAX int __dax_zero_page_range(struct block_device *bdev, diff --git a/mm/filemap.c b/mm/filemap.c index 65b4b6e7f7bd..dad935769055 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -130,17 +130,8 @@ static int page_cache_tree_insert(struct address_space *mapping, return -EEXIST; mapping->nrexceptional--; - if (!dax_mapping(mapping)) { - if (shadowp) - *shadowp = p; - } else { - /* DAX can replace empty locked entry with a hole */ - WARN_ON_ONCE(p != - dax_radix_locked_entry(0, RADIX_DAX_EMPTY)); - /* Wakeup waiters for exceptional entry lock */ - dax_wake_mapping_entry_waiter(mapping, page->index, p, - true); - } + if (shadowp) + *shadowp = p; } __radix_tree_replace(&mapping->page_tree, node, slot, page, workingset_update_node, mapping); |